One of the cups isn't loose in the frame is it? Or wrong standard as there are a few different 1" standards.
It doesn't seem to be. Or at least, overtightening the headset slightly seems to have fixed the problem, so if one of the cups is loose then I'm not seeing it. But thanks for the pointer!
@BrickMan started
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One of the cups isn't loose in the frame is it? Or wrong standard as there are a few different 1" standards.